Uniden UM425 English Owners Manual - Page 36

Using Digital Selective Calling (DSC) Features • When the other station accepts the call, both radios switch to the selected response channel for voice transmission. • If the other station cannot respond on the channel you selected, the radio displays Not support CH. Calling a particular group of stations (Group Call) Group calling calls all the stations that share your group MMSI. You must have a group MMSI programmed into the radio to make a group call, and the stations (boats) you are calling must have this same group MMSI programmed into their radios. 1. Press the MENU-PA button to display the menu. 2. Choose the DSC Call sub-menu and select Group. 3. The radio prompts you to select a response channel. Use the CHANNEL UP and CHANNEL DOWN buttons to scroll through the available channels. When you reach the channel you want to use for a response, press the SELECT-1W/25W button. 4. The radio asks you to confirm the call. Select Send to continue with the call or select Cancel to cancel the call. 5. The radio switches to channel 70 to transmit the call request then automatically switches to the designated response channel. Calling all stations (All-Ships Call) All ships calling contacts all DSC radios within range of your boat. You should only use all ships calling in the event of a Safety warning (such as debris in the water) or to request assistance in an Urgency (any situation where your vessel has a serious problem but is not yet in distress). 1. Open the menu and select the DSC Call sub-menu. 2. Select All Ships, and then choose whether this is an Urgency call or a Safety call. 3. The radio asks you to confirm the call. Select Send to continue with the call or select Cancel to cancel the call. 4. The radio automatically switches to channel 70 to transmit the call request then automatically switches to channel 16, the designated response channel for all-ships calling. E-32